I appreciate the input and suggestions. Hearing first hand knowledge is always more valuable to me than speeds and feeds. Since insurance is picking up most of the bill, I think I am going to go with the D800 and then look for a gently used D300s as a second body/back up.
Ken Rockwell's site has an interesting comparison of tech data here:
Tom - I think you are right, the lens selection process is going to be a lot more challenging. There are a couple no-brainer lenses I need to pick up soon (Nikon 70-200, 50mm 1.4, 35mm 1.4 etc), but having a harder time finding replacements for my Voigtlander's (15, 20, 40 & 90mm). So the hunt continues!
BIG thanks to everyone for your support and feedback, much appreciated!